/*=============================================================================

    This file is part of FLINT.

    FLINT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    FLINT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with FLINT; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

=============================================================================*/
/******************************************************************************

    Copyright (C) 2012 Fredrik Johansson

******************************************************************************/

#include "generics.h"

elem_ptr _elem_vec_realloc(elem_ptr vec, long old_len, long new_len, const ring_t ring)
{
    long i;

    if (old_len < new_len)
    {
        vec = realloc(vec, ring->size * new_len);

        for (i = old_len; i < new_len; i++)
            elem_init(INDEX(vec, i, ring->size), ring);
    }
    else if (old_len > new_len)
    {
        for (i = new_len; i < old_len; i++)
            elem_clear(INDEX(vec, i, ring->size), ring);

        vec = realloc(vec, ring->size * new_len);
    }

    return vec;
}

